is-chpmp and is-chpmphp manual c - nkk switches and is-chpmphp manual 7850 east gelding drive •...

IS-CHPMP and IS-CHPMPHP Manual

7850 East Gelding Drive • Scottsdale, AZ 85260-3420

IS-CHPMP and IS-CHPMPHP Manual C.docx of 9

Toll Free 1.877.2BUYNKK (877.228.9655) • Phone 480.991.0942 • Fax 480.998.1435 www.nkkswitches.com • Email [email protected] 0617

IS-CHPMP and IS-CHPMPHP Manual Revision C

NKK SWITCHES

7850 E. Gelding Drive

Scottsdale, AZ 85260

Toll Free 1-877-2BUYNKK (877-228-9655)

Phone 480-991-0942

Fax 480-998-1435

e-mail <[email protected]>

All Rights Reserved Worldwide

NKK Switches makes no warranty for the use of these products and assumes no responsibility for any errors,

which may appear in this document, nor does it make a commitment to update the information contained herein.

Smart Switch is trademark of NKK Switches.





TABLE OF CONTENTS

Table of Contents ..........................................................................................................2

1. General Description ..................................................................................................3

2. Electrical Characteristics ..........................................................................................5

3. Pin Configurations ....................................................................................................5

4. Multi-Switch Operation ...........................................................................................6

5. Schematic ....................................................................................................................7

6. Build of Material .......................................................................................................8

7. Board Layout .............................................................................................................9

8. Dimensions ................................................................................................................9





1. General Description.

There are two different charge pumps; IS-CHPMP and IS-CHPMPHP. They are designed for different uses.

OLED products supported by the charge pumps.

IS-CHPMP IS-CHPMPHP

OLED Switch ISC15ANP4 ISC15ANP4

OLED Display ISC01P ISC01P

OLED Rocker IS18IA001 IS18IA001

Frameless OLED - ISF15ACP4

The IS-CHPMP is a DC/DC voltage step-up converter with an input of 2.7-5.5V and an output of 16V for use in

driving OLED displays. The IS-CHPMP utilizes Maxim’s MAX8574 step-up converter to take advantage of its

floating output during shutdown mode. A 2x4 .100” header is required to interface with charge pump.

The IS-CHPMPHP is a DC/DC voltage step-up converter with an input of 2.7-5.5V and an output of 15V for

use in driving OLED displays. The IS-CHPMPHP utilizes LM2735YMF/NOPB step-up converter to take

advantage of its floating output during shutdown mode. A 2x4 .100” header is required to interface with charge

pump.

IS-CHPMP and IS-CHPMPHP are RoHS compliant.





Photo 1, IS-CHPMP, Primary side Photo 2, IS-CHPMP, Secondary side

Photo 3, IS-CHPMPHP, Primary side Photo 4, IS-CHPMPHP, Secondary side





2. Electrical Characteristics

IS-CHPMP IS-CHPMPHP

2.7-5.5V Input Voltage. 2.7-5.5V Input Voltage.

16V Output Voltage. 15V Output Voltage.

Floating output when in shutdown mode. Floating output when in shutdown mode.

Current Capability: 20mA Current Capability: 130mA

Does not have pulldown resistor for disable. Has pulldown resistor for disable.

Current .05uA typical, 1uA maximum in shutdown

mode.

Current .05uA typical, 1uA maximum in shutdown

mode.

3. Pin Configurations

IS-CHPMP

Pin Name Function

1 V3.3 Input voltage supply between 2.7-5V.

2 V16 Output voltage preset to 16V.

3 SHTDN Shutdown input. A logic high puts the MAX8574 into normal

operation. A logic low at SHTDN places the MAX8574 into low-

power shutdown mode. Does not have pulldown resistor for

disable.

4 GND Ground

5 GND 5 connected to 4

6 SHTDN 6 connected to 3

7 V16 7 connected to 2

8 V3.3 8 connected to 1

IS-CHPMPHP

Pin Name Function

1 V3.3 Input voltage supply between 2.7-5V.

2 V16 Output voltage preset to 15V.

3 SHTDN Shutdown input. A logic high puts the LM2735Y into normal

operation. A logic low at SHTDN places the LM2735Y into low-

power shutdown mode. Has pulldown resistor for disable.

4 GND Ground

5 GND 5 connected to 4

6 SHTDN 6 connected to 3

7 V16 7 connected to 2

8 V3.3 8 connected to 1

Note: Incorrect installation of the connector could damage the charge pump and/or the

motherboard.





Illustration 1, Pin Configuration in relation to

board, IS-CHPMP

Illustration 2, Pin Configuration in relation to

board IS-CHPMPHP

4. Multi-Switch Operation

OLED power consumption is based on the number of pixels on. The safe way to calculate the number of OLED

products that can be powered by one charge pump is as stated below:

NumberofOLEDproducts =ChargePumpCurrentCapability

AllPixelsOnModeMaxCurrent

It is possible to have more OLED products powered by one charge pump since under normal operation not all

the pixels are on at the same time.

If more OLED product need to be powered, then multiple charge pumps can be placed in parallel.





5. Schematic

Illustration 5, Schematic for IS-CHPMP

Illustration 6, Schematic for IS-CHPMPHP





6. Build of Material

BOM for IS-CHPMP

Item Count Designation Part Number Description Value Package

1 1 - P-CHPMPD PCB/OLED CHARGE PUMP/REV D - -

2 1 C1 MA0805XR105K160R CAPACITOR, 1uF, SM0805, 16V, X7R 1UF SM0805

3 1 C2 C2012X5R0J475K CAPACITOR, 4.7uF, SM0805, 6.3V, X5R 4.7UF SM0805

4 1 C3 GRM219R71E105KA88D CAPACITOR, 1uF, SM0805, 25V, X7R 1UF SM0805

5 1 C4 GRM2165C1H4R7CD01D CAPACITOR, 4.7pF, SM0805, 50V, COG 4.7PF SM0805

6 1 D1 BAT42W-V-GS08 DIODE, SCHOTTKY, SOD-123, 0.200A, 30V SOD-123

7 1 J1 PPPC042LFBN-RC HEADER, 2x4, RECEPT, FEMALE, .100", THU, STRAIGHT, GOLD 2x4 THR HOLE

8 1 L1 LQH32CN100K33L INDUCTOR, 10uH, 450MA, 0.300 OHM, SMD 10UH SMD

9 1 R1 RK73H2ATTD6044F RESISTOR, 6.04M, SM0805, 1/8W, 1% 6.04M SM0805

10 1 R2 RK73H2ATTD4993F RESISTOR, 499K, SM0805, 1/8W, 1% 499K SM0805

11 1 U1 MAX8574EUT+T IC, SOT-23-6, LCD STEP-UP DC-DC CONVERTER, 500mA, 2.7V TO 5.5V SOT-23-6

BOM for IS-CHPMPHP

Item Count Designation Part Number Description Value Package

1 1 - P-CHPMPHP PCB, CHARGE PUMP HIGH POWER, Rev C - -

2 1 C1 C2012X5R0J226M/1.25 CAPACITOR, 22uF, SM0805, 6.3V, X5R 22uF SM0805

3 1 C2 C3216X5R1E106M CAPACITOR, 10uF, SM1206, 25V, X5R 10uF SM1206

4 1 C3 CC0805KRX7R9BB471 CAPACITOR, 470pF, SM0805, 50V, X7R 470pF SM0805

5 - C4 - - - -

6 1 D1 MBR0530 DIODE, SCHOTTKY, SOD-123, 0.5A, 30V SOD-123

7 1 J1 929975-01-36

HEADER, 2x36, .100", THU, FEMALE, STRAIGHT Cut 2x4 THR HOLE

8 1 L1 74404054330 INDUCTOR, 33uH, 1.2A, 189 mOHM, SMD 33UH SMD

9 1 R1 RMCF0805FT10K0 RESISTOR, 10K, SM0805, 1/8W, 1% 10K SM0805

10 1 R2 RC0805FR-07110KL RESISTOR, 110K, SM0805, 1/8W, 1% 110K SM0805

11 1 U1 LM2735YMF/NOPB VOLTAGE REGULATOR, SOT23-5, STEP-UP,

520kHz, ADJ O.P. 3-24V,2.1A SOT23-5





7. Board Layout 8. Board Layout for IS-CHPMP

Illustration 7, Primary side Illustration 8, Secondary side

Note: No traces or ground plane shall be present under the inductor.

Board Layout for IS-CHPMPHP

Illustration 9, Primary side Illustration 10, Secondary side

Note: No traces or ground plane shall be present under the inductor.

9. Dimensions

is-chpmp and is-chpmphp manual c - nkk switches and is-chpmphp manual 7850 east gelding drive •...

Documents